High-resolution wave-theory-based ultrasound reflection imaging using the split-step fourier and globally optimized fourier finite-difference methods
Patent
·
OSTI ID:1107790
Methods for enhancing ultrasonic reflection imaging are taught utilizing a split-step Fourier propagator in which the reconstruction is based on recursive inward continuation of ultrasonic wavefields in the frequency-space and frequency-wave number domains. The inward continuation within each extrapolation interval consists of two steps. In the first step, a phase-shift term is applied to the data in the frequency-wave number domain for propagation in a reference medium. The second step consists of applying another phase-shift term to data in the frequency-space domain to approximately compensate for ultrasonic scattering effects of heterogeneities within the tissue being imaged (e.g., breast tissue). Results from various data input to the method indicate significant improvements are provided in both image quality and resolution.
- Research Organization:
- LANL (Los Alamos National Laboratory (LANL), Los Alamos, NM (United States))
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Number(s):
- 8,568,318
- Application Number:
- 12/033,841
- OSTI ID:
- 1107790
- Country of Publication:
- United States
- Language:
- English
Ultrasound pulse-echo imaging using the split-step Fourier propagator
|
conference | March 2007 |
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